Bottle-stopper.



E. GOLTSTEIN.

BOTTLE STOPPER.

APPLICATION FILED JULY 17, 1903.`

Patented June 29, 1909.

l WITNESSES By YIW )7M ATTORNEYS EWALD GoLTs'rEN, or COLOGNE, GERMANY.

BOVTTLE-STOPPER.

No. 926,403. l

Specification of Letters Patent.

Patentedrune 29, 1909.

. Application filed July 17, 12203. Serial Nc. 166,037.

T o all 'whom 'it may concern:

' Be it known that I, EWALD GoL'rs'rnIN, a subject ofthe German Emperor,and resident ofCologne, Germany, have invented certain new and useful Imrovements inl Bottle` Stoppers, of'which t e Ifollowing is aspecificatlon.v l

My inventionirelates to the closing and.

sealing vof receptacles such-as bottles and `jars, by means of externalmetallic. caps or. capsules -whieh are crimped or compressed around theneck-of the rece tacle 'and into beneath shoul ers or flanges grooves orthereon.

The object of my invention is to providev a capsule which Without anyseparate strengthenin device shall be capable of being appliec to areceptacle so as to form a closure capable of withstanding high internalpressure and'which'may yet be readily torn "oil or removed by the handalone, without resorting either to weakening the capsule by slits orweakened lines orto. the use of sepa-v rate instruments or tools foropening.

Two specific embodiments of my invention are lshown in the accompanyingdrawings, in which-v Figure 1 is a vertical section of one form of myimproved ca sule applied' to the upper end of a receptac e but not yetin the sealmgosition; Fig.- 2 is a plan view of the capsule; ig. 3 showsthesaid capsule on the receptacle in the sealing position; and Fig. 4 isa vertical section showing another form of my invention.l

The neck 1 ofthe receptacle is formedon' y' its outersurfacewith a bead2 and a shoulderV entering portion 4 which has an importantfunction inconnection with the capsule- 5 as will be explained presently.. Thecapsule ismade of a soft sheet metal such as aluminum'.

I s thin enough to'be readil torn by the hand without being previousyweakened and without theusejof tools. Thei top ofthe capsule presses on'a suitable packing such as AFig. 4.' In theconstmctions illustrated by.50

thering 6 in Figs. 1 and 3, or thed'iskin the. drawings, the.top,of thecapsule is cut through so asto form an integral tongue 7 free at one endand attached to the-capsule at the other.v This tongue maybe lifted bythe fingers and-.pulled f. ownward across 'the crimping'flange forrupturing and removing the capsule .after sealing., With thisconstruction', vinasmuch as the top of .thefcapsule 4bead lor.

has been cut through entirely, itis advisable to interpose a plate Sbetween the capsule and the packing, unless the packing is in thc formof a disk as in Fig. 4 in .which event for certain -purposes the plate Smay be :lispensed. with. It is 'important that the de- Y ending flange 9of the capsule should be ong enough so that after sealing it will extendbelow the groove or rentering portion 4 so as to forma skirt or bandwhich not onlyincreases the rictional resistance'of the capsule, butalso greatly stiHens it.

In the `use of my invention the capsule 5, the plate 8 "and the packing6 or 6 may be first assembled and then applied to. the receptacle.Pressure may then be' applied for bringing the capsule irmly against t epacking (orits covering plate S) and against the receptacle, into thesealing position illustrated in Fig. 3 (as to one form of my invention).For thus pressing thecapsule into sealing osition, I prefer to employ aparatus' of t e character shown in my ettcrs Patent No. 743,636 datedNovember .10, 1903. By means of such apparatus, a capsule having thedescribed characteristics-may be pressed' tightly downward against thereceptacle'for making an airtightA closure and then secured in suchposition by ressing the depending flange inwardly into ocking andfrictional engagement with thereceptacle.

The pressure applied lagainst the flange of the-capsule by such anapparatus is ver great and. forces the soft metal into suci tight andintimate contact with the rece tacle as to cause it to tightly hug andclose y conform with every surface irregularity thereon. The flange isnot only pressed into any groove or around and beneath anys ioulderpurposelyformed around the receptaole'ncck for engagement with thecapsule, but is ,furthermore forced into every little crevice and aroundevery tiny pro'ec- Y' tion or lmperfection occurring on the sur acc ofthereceptaclc." Thus a great. number of minute locking en agements. areformed between the ca su e and the receptacle,

many of them a most imperceptible to the naked eye,l but in theaggregate sulicient to greatly strengthen the capsules grip on thcreceptacle and serving also to materlally stien the yielding materialfrom which the capsule is formed. Pressing the Hangs ofthe capsule underthe shoulder 3 and into the l' groove-4h01; only )roducesa tightloclcrng 4 engagement, but t 1e well-defined circum-v placementbyinternal pressure.

ferential rim or groove which is thus formed' the groove rshoulderaround the receptacle in the flange further tends to stiffen thecapsule and so increase its eiiiciency against dis- The, factors whichcontribute to thewonderful' eiciency of my improved capsule, made as itis of a soft readily-torn material, and

'which render unnecessaryv theuse of sepy varate strengthening Wires orother holding means, may therefore be summed u briefly res1stroduced byforcingthe ange of the capsu e around its entire periphery .tightlyagainst the receptacle; the locking engagement of the iiange withspecially formed grooves or beads on the receptacle; the adiI ditionalgrip which is afforded by forcing the soft metal of the iiange intominute 4locking engagement with every surface iin erfection; thestiffening of the capsule resu ting yfrom such minute engagements, fromthe forma# tion of the well defined circumferential rim or groove in theflange o f the capsule, and

from the presence of the depending skirt or band Aformed by lthe flangeextending below` neck after sealing. It will'thus be seen that the softnature of the material from which the'capsule is formed not onlyfacilitates its ready removal', but also performs important 3 functionsin strengthening its hold on the receptacle. A v

'I claim as my invention The combination of a' receptacle having "are'ntering portion in its outer surface, and a 3 cap'havlng its topeutthrough so as to form 4{tn-integral rupturlng tongue forl tearing the vvsixth day of July, 1903.

- EWALD eoLfrsTniN.

Witnesses:

' W.- FRHRR. v. LYNDK'ER,

CARL Sonluirr.A

